Objectives Upon completion of this chapter, you will be able to answer the following questions: • What is the purpose of ARP? Key Terms This chapter uses the following key terms. You can find the definitions in the Glossary. ARP table ARP cache Introduction (24.0) Webster here again! I have another friend to introduce to…
IPv4 Address Structure Summary
IPv4 Address Structure Summary (23.2) The following is a summary of each topic in the chapter and some questions for your reflection. What Did I Learn in this Module? (23.2.1) An IPv4 address is a 32-bit hierarchical address that is made up of a network portion and a host portion. When determining the network portion…
The Prefix Length – 100-150 Exam Guide
The Prefix Length (23.1.3) Expressing network addresses and host addresses with the dotted decimal subnet mask address can become cumbersome. Fortunately, there is an alternative method of identifying a subnet mask, a method called the prefix length. The prefix length is the number of bits set to 1 in the subnet mask. It is written…
IPv4 Address Structure – 100-150 Exam Guide
Objectives Upon completion of this chapter, you will be able to answer the following questions: • What is the structure of an IPv4 address including the network portion, the host portion, and the subnet mask? Key Terms This chapter uses the following key terms. You can find the definitions in the Glossary. prefix length Introduction…
User-defined routes – MS AZ-104 Exam Guide
User-defined routes In some cases, you will want to configure the routing of packets differently from what is pro- vided by the default system routes. One of these scenarios is when you want to send traffic through a network virtual appliance, such as a third-party load balancer, firewall, or router deployed into your VNet from…
Network Layer Summary
Network Layer Summary (22.4) The following is a summary of each topic in the chapter and some questions for your reflection. What Did I Learn in this Module? (22.4.1) • Network Layer Characteristics—The network layer, or OSI Layer 3, provides services to allow end devices to exchange data across networks. IPv4 and IPv6 are the…
IPv6 Packet Header
IPv6 Packet Header (22.3.4) The fields for the IPv6 packet header shown in Figure 22-10 are as follows: • Version —This field contains a 4-bit binary value set to 0110 that identifies this as an IP version 6 packet. • Traffic Class — This 8-bit field is equivalent to the IPv4 Differentiated Services (DS) field….
IPv6 Packet – 100-150 Exam Guide
IPv6 Packet (22.3) This topic introduces the successor of IPv4: IPv6. Limitations of IPv4 (22.3.1) IPv4 is still in use today. This topic is about IPv6, which will eventually replace IPv4. To better understand why you need to know the IPv6 protocol, it helps to know the limitations of IPv4 and the advantages of IPv6….
Outbound internet connections
Outbound internet connections When a public IP address is assigned to a virtual machine’s network interface, outbound traffic to the internet will be routed through that IP address. The recipient will see your public IP address as the source IP address for the connection. However, the virtual machine itself does not see the public IP…
IPv4 Packet Header Fields
IPv4 Packet Header Fields (22.2.2) The binary values of each field identify various settings of the IP packet. Protocol header diagrams, which are read left to right, and top down, provide a visual to refer to when discussing protocol fields. The IP protocol header diagram in Figure 22-7 identifies the fields of an IPv4 packet….